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      Chemie frustrierter Lewis-Paare: Entwicklung und Perspektiven

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      Angewandte Chemie

      Wiley-Blackwell

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          Frustrated Lewis Pairs: Metal-free Hydrogen Activation and More

          Sterically encumbered Lewis acid and Lewis base combinations do not undergo the ubiquitous neutralization reaction to form "classical" Lewis acid/Lewis base adducts. Rather, both the unquenched Lewis acidity and basicity of such sterically "frustrated Lewis pairs (FLPs)" is available to carry out unusual reactions. Typical examples of frustrated Lewis pairs are inter- or intramolecular combinations of bulky phosphines or amines with strongly electrophilic RB(C(6)F(5))(2) components. Many examples of such frustrated Lewis pairs are able to cleave dihydrogen heterolytically. The resulting H(+)/H(-) pairs (stabilized for example, in the form of the respective phosphonium cation/hydridoborate anion salts) serve as active metal-free catalysts for the hydrogenation of, for example, bulky imines, enamines, or enol ethers. Frustrated Lewis pairs also react with alkenes, aldehydes, and a variety of other small molecules, including carbon dioxide, in cooperative three-component reactions, offering new strategies for synthetic chemistry.
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            Asymmetric Catalysis: Science and Opportunities (Nobel Lecture) Copyright© The Nobel Foundation 2002. We thank the Nobel Foundation, Stockholm, for permission to print this lecture.

             Ryoji Noyori (2002)
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              Frustrierte Lewis-Paare: metallfreie Wasserstoffaktivierung und mehr

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                Author and article information

                Journal
                Angewandte Chemie
                Angew. Chem.
                Wiley-Blackwell
                00448249
                May 26 2015
                May 26 2015
                : 127
                : 22
                : 6498-6541
                Article
                10.1002/ange.201409800
                © 2015
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